The cat5 cable has no connectors on it, it is just a cable at the moment.Your Cat5e ethernet cable has an internet connection, so if you plugged into the ethernet port on a laptop or smart TV then that would work.
I sounds like you need some way of making the connection wireless. ()
Did you use any cables to connect the mesh system?
The mesh system was Atria Strong or Strong Atria bought from Curry's, 3 units, 1 master that plugged into the router which then communicated itself to the other two units, all three units were connected to the mains.
I couldn't get connection between the devices when I put it in the GR It was Wireless.